Linked Life Data

21507119

Source:http://linkedlifedata.com/resource/pubmed/id/21507119

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2011-6-17
pubmed:abstractText
We assessed the adaptive potential of seed and leaf phenology in 10 natural populations of sessile oak (Quercus petraea) sampled along two altitudinal transects using common garden experiments. Population differentiation for both phenological traits was observed with high-altitude populations germinating and flushing later than low altitude ones. However, high genetic variation and heritability values were also maintained within populations, despite slightly decreasing for dates of leaf unfolding with increasing altitude. We suggest that biotic and abiotic fluctuating selection pressures within populations and high gene flow are the main mechanisms maintaining high genetic variation for these fitness related traits. Moreover, changes in selection intensity and/or selection pressures along the altitudinal gradient can explain the reduction in genetic variation observed for leaf phenology. We anticipate that the maintenance of high genetic variation will be a valuable resource for future adaptation of sessile oak populations undergoing an upslope shift caused by climate change.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1420-9101
pubmed:author
pubmed:copyrightInfo
© 2011 The Authors. Journal of Evolutionary Biology © 2011 European Society For Evolutionary Biology.
pubmed:issnType
Electronic
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1442-54
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Adaptive responses for seed and leaf phenology in natural populations of sessile oak along an altitudinal gradient.
pubmed:affiliation
INRA, UMR1202 Biodiversité Gènes et Communautés, Cestas, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't